Biology – Quantitative Biology – Neurons and Cognition
Scientific paper
2011-05-24
Biology
Quantitative Biology
Neurons and Cognition
7 pages, 5 figures
Scientific paper
Critical dynamics are assumed to be an attractive mode for normal brain functioning as information processing and computational capabilities are found to be optimized there. Recent experimental observations of neuronal activity patterns following power-law distributions, a hallmark of systems at a critical state, have led to the hypothesis that human brain dynamics could be poised at a phase transition between ordered and disordered activity. A so far unresolved question concerns the medical significance of critical brain activity and how it relates to pathological conditions. Using data from invasive electroencephalogram recordings from humans we show that during epileptic seizure attacks neuronal activity patterns deviate from the normally observed power-law distribution characterizing critical dynamics. The comparison of these observations to results from a computational model exhibiting self-organized criticality (SOC) based on adaptive networks allows further insights into the underlying dynamics. Together these results suggest that brain dynamics deviates from criticality during seizures caused by the failure of adaptive SOC.
Bullmore Ed
Gross Thilo
Hallmeyer-Elgner Susanne
Meisel Christian
Storch Alexander
No associations
LandOfFree
Failure of adaptive self-organized criticality during epileptic seizure attacks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Failure of adaptive self-organized criticality during epileptic seizure attacks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Failure of adaptive self-organized criticality during epileptic seizure attacks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-515967